Question
 In a lock-making factory, 10 percent of the total
produced locks were found to be defective, and 80 percent of the non-defective locks were exported. If 98,900 non-defective locks were not exported, then how many locks would be produced?Solution
Let the total number of locks produced=100 Defective lockers =10% So now non-defective lockers=90 non-defective exported lockers =80% So non-defective exported locks=90×80/100 =72 non-defective locker not exported =95-72=23 ATQ- 23=98900 1=4300 100=430000. The total number of lockers produced =430000.
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